brittle oak
Hello, I recently got a CR-10 and I’ve been working on it but of the two prints I’ve attempted, (one from the built in files, one calibration test) there’s a wavy gap pattern on both. Unsure if it’s just really bad underextrusion or something else/multiple issues?
dusky moat
That looks like a really nasty underextrusion
Whats your printing temp?
Do you hear clicking sound when it is printing?
dusky moat
Try checking the extruder, is it pushing the filament ?
If you hold the filament where it is inserted to the extruder, you should feel a snug pull
brittle oak
Yeah it’s pulling
dusky moat
when you tell the printer to extrude using the console, is filament coming out from the nozzle?
brittle oak
Yes
dusky moat
if you could provide a video with it that will help
brittle oak
Of the filament being extruded?
dusky moat
yes
brittle oak
On it
dusky moat
Tell it to extrude 20mm filament or so
brittle oak
dusky moat
Doesnt seem like its extruding properly
brittle oak
Yeah
dusky moat
Most likely something is wrong with your extruder
Try removing rhe pneumatic coupling on the extruder, and have it extrude filament
See if the filament is moving consistently
Is your extruder griping the filament properly?
Usually with the stock plastic extruder, a crack can form under the extruder arm. Which cause the extruder to not grip the filament.
You might want to check for that aswell
dusky moat
Usually with the stock plastic extruder, a crack can form under the extruder arm...
You need to dissassemble the extruder for this
brittle oak
Okay, I’ll try/check that
Is this removed enough? Or would I remove the tubing as well to get it completely off
dusky moat
Remove everything so you can see it clearly
dusky moat
Is it pushing it consistenly?
brittle oak
I believe so
dusky moat
Try using the console and tell it to extrude 100mm of filament, then measure the extruded filament, if it is 100mm then your extruder is fine and you might have a clog in your hotend
dusky moat
ok the problem is in your extruder then
brittle oak
E in mm3 was on I just realized
And now 100 is looking a lot more like 100
Now 100 is closer to 95mm
Huh
dusky moat
its not consistent?
brittle oak
Before I turned it off it wasn’t and now it’s closer to what I asked of it
dusky moat
ok, try checking for crack under the extruder arm just to be safe, its a very common problem with the stock extruder and most people recommend upgrading to a metal extruder from the get go, so if you have the budget go for it
if there is no crack, you need to check the hotend for clogs
This is how you check and clean for a clog in the hotend
Fire up the nozzle to 230. Take off the Bowden. Take off the nozzle. Take off the coupler. Take some Bowden tube then feed it through to scrape the inside of the hot end. Put the nozzle on. Then push filament through it and make sure it comes out straight. Then put it back together. Make sure the bowden is cut straight and clean too
brittle oak
I don’t see any cracks but Yeah I’m definitely going to get that now just to avoid that problem in the future. Now to check for clogs, thanks!
dusky moat
while you are at it, get the blue capricorn tubing as well
brittle oak
K
brittle oak
Thanks for the tips! The issue doesn’t seem to be entirely resolved but definitely improved
rigid tide
Often times, it can look like that if you are printing too fast(as another example of under extrusion) where the hotend can't melt the plastic fast enough
Tested a neptune 3 and somehow accidentally set the speed to 300-400 mm a second. That printer was FLYING
brittle oak
I think my speed was the default but I’ll double check and if it is I’ll try printing slower than advised. Or maybe increasing hotend temp as well
rigid tide
from what i saw on the nozzle extrusin, there could be some stuff in the nozzle. have you tried printing at hotter temps? or at least testing the flow at hotter temps?
brittle oak
The benchy was at a hotter temp but still the lower range of what’s recommended for the filament
brittle oak
215 is what I printed the benchy on
rigid tide
still working out clogging kinks on that one though
do you have any cleaning needles?
brittle oak
Yes
rigid tide
heat it up and push the needle through a bit.